New Biofortification Tool: Wheat TaCNR5 Enhances Zinc and Manganese Tolerance and Increases Zinc and Manganese Accumulation in Rice Grains
| Autor: | Zhangli Hu, Shuang Liang, Fanhong Wang, Tuanyao Chai, Kun Qiao, Hong Wang |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Arabidopsis Biofortification chemistry.chemical_element Manganese Genetically modified crops Zinc 01 natural sciences Nutrient Food science Triticum Plant Proteins Cadmium 010401 analytical chemistry food and beverages Biological Transport Oryza General Chemistry Plants Genetically Modified Micronutrient 0104 chemical sciences chemistry Shoot General Agricultural and Biological Sciences 010606 plant biology & botany |
| Zdroj: | Journal of Agricultural and Food Chemistry. 67:9877-9884 |
| ISSN: | 1520-5118 0021-8561 |
| Popis: | Heavy metal contaminants and nutrient deficiencies in soil negatively affect crop growth and human health. The plant cadmium resistance (PCR) protein transports heavy metals. The abundance of PCR is correlated with that of cell number regulator (CNR) protein, and the two proteins have similar conserved domains. Hence, CNR might also participate in heavy metal transport. We isolated and analyzed TaCNR5 from wheat (Triticum aestivum). The expression level of TaCNR5 in the shoots of wheat increased under cadmium (Cd), zinc (Zn), or manganese (Mn) treatments. Transgenic plants expressing TaCNR5 showed enhanced tolerance to Zn and Mn. Overexpression of TaCNR5 in Arabidopsis increased Cd, Zn, and Mn translocation from roots to shoots. The concentrations of Zn and Mn in rice grains were increased in transgenic plants expressing TaCNR5. These roles of TaCNR5 in the translocation and distribution of heavy metals mean that it has potential as a genetic biofortification tool to fortify cereal grains with micronutrients. |
| Databáze: | OpenAIRE |
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